A sack is a large bag made of thick paper or rough material. Sacks are used to carry or store things such as food or groceries.

The sack is when your employers tell you that you can no longer work for them because you have done something that they did not like or because your work was not good enough.

If your employers sack you, they tell you that you can no longer work for them because you have done something that they did not like or because your work was not good enough.